look up any word, like hipster:
 
18.
One who has achieved the highest level of pure awesome, acting in direct support of combat ground forces in order to save the lives of their fellow servicemen/women. Often found having the balls to stick their necks out of well protected vehicles (trucks, airplanes, helicopters) in order to effectively eliminate the opposition. will normally exceed all expectations and succeed where other cannot. Commonly referred to as being "retarded" or easily distracted by shinny objects. Typically make other jobs such as sensor operator, flight engineer, pilot, vehicle commander, driver, and fobbit look like little bitches.
im not a pilot, i work for a living. im a gunner
by truth of the matter April 07, 2009
 
1.
A person who is competitive,overly-ambitious and substantially exceeds minimum requirements. A gunner will compromise his/her peer relationships and/or reputation among peers in order to obtain recognition and praise from his/her superiors.
That chic in the front row of our class who always raises her hand, takes on additional assignments, and wrote a 25 page answer on our final when all that was required was 10 pages is such a gunner.
by Jenna J October 26, 2003
 
2.
A name for someone, typically a medical student, who will do anything (ethical or otherwise) to get ahead.
M1 Dude: "So, Bunson explained that the kidneys are somehow connected to the islet of Langerhans?"

Other M1 Dude: "Don't listen to Bunson. He's a total gunner. Bunson will burn you everytime."
by The Quill May 22, 2009
 
3.
A person (usually a medical or law school student) who uses over 3 different colored highlighters, tabs every page in their notebook, and raises their hand after every question asked by their professor, regardless of if they know the correct answer or not. Gunners like to hear themselves speak. They use complicated words to make themselves sound smart even though they have no idea what's going on in class- they pretend they do. They are trying to intimidate you and eliminate competiton.
This gunner in my Chemistry class answers every question the professor asks, asked 5 questions during a 1hr class, and uses 8 different colored highlighters.
by Supanda L July 03, 2011
 
4.
Nickname to the Kings Of London Arsenal. Gooners is another word.
"We love you Arsenal we do, we love you Arsenal we do, we love you Arsenal we do, oooh Arsenal we love you"

"Come on you GUNNERS!"
by bhd November 26, 2005
 
5.
A medical student that tries way too hard by keeping up with daily medical news, read medical journals on the toilet, and brings all their notes to the gym while "working out"
SC: Did you know that Ezetimibe (cholesterol lowering drug) is CI in heart disease? It said so on AMA-news this morning.
JY: What's Ezetimibe? Dude what a gunner!
by Mr. Jefferson's Med Student November 16, 2009
 
6.
Pendulous, large breasts
Whoa, look at her big big gunners!
I'd hang on to those puppies!
by mmmlele August 12, 2007
 
7.
A player, member or supporter of the North London based football team, Arsenal FC

That guy is celebrating a victory. He must be a gunner!
by D.N.I September 17, 2007